Nicole Richie Has a Late Birthday Bikini Celebration (PHOTOS)

Nicole Richie sure knows how to turn her birthday into a week of good times.

Richie, who just this past Wednesday celebrated turning 30 years old, apparently had more in store than just her party in Los Angeles that was a star-studded affair. Nicole kept the party going by jetting off to Mexico, where she was spotted soaking up the sun in a black bikini with pal Samantha Ronson.

Nicole can even be seen enjoying a frosty red drink (hmm, daquiri perhaps?) as she and Sam enjoyed a little bit of time by the pool.

Richie’s big 30th birthday bash earlier this week was at the Beverly Wilshire hotel for some of her closest friends. Mary-Kate and Ashley Olsen, Samantha Ronson, and of course husband Joel Madden were a few celeb guests in attendance.